1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/* SPDX-License-Identifier: MIT */
/*
* Description: test wq sharing
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "liburing.h"
static int test_attach_invalid(int ringfd)
{
struct io_uring_params p;
struct io_uring ring;
int ret;
memset(&p, 0, sizeof(p));
p.flags = IORING_SETUP_ATTACH_WQ;
p.wq_fd = ringfd;
ret = io_uring_queue_init_params(1, &ring, &p);
if (ret != -EINVAL) {
fprintf(stderr, "Attach to zero: %d\n", ret);
goto err;
}
return 0;
err:
return 1;
}
static int test_attach(int ringfd)
{
struct io_uring_params p;
struct io_uring ring2;
int ret;
memset(&p, 0, sizeof(p));
p.flags = IORING_SETUP_ATTACH_WQ;
p.wq_fd = ringfd;
ret = io_uring_queue_init_params(1, &ring2, &p);
if (ret == -EINVAL) {
fprintf(stdout, "Sharing not supported, skipping\n");
return 0;
} else if (ret) {
fprintf(stderr, "Attach to id: %d\n", ret);
goto err;
}
io_uring_queue_exit(&ring2);
return 0;
err:
return 1;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret;
if (argc > 1)
return 0;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed\n");
return 1;
}
/* stdout is definitely not an io_uring descriptor */
ret = test_attach_invalid(2);
if (ret) {
fprintf(stderr, "test_attach_invalid failed\n");
return ret;
}
ret = test_attach(ring.ring_fd);
if (ret) {
fprintf(stderr, "test_attach failed\n");
return ret;
}
return 0;
}
|
